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  2. Biotic index - Wikipedia

    en.wikipedia.org/wiki/Biotic_index

    It is often used to assess the quality of water in marine and freshwater ecosystems. Numerous biotic indices have been created to account for the indicator species found in each region of study. The concept of the biotic index was developed by Cherie Stephens in an effort to provide a simple measurement of stream pollution and its effects on ...

  3. Freshwater aquarium - Wikipedia

    en.wikipedia.org/wiki/Freshwater_aquarium

    Aquarium substrate is important for the fish's health and replicating their natural environment. Aquarium decoration can consist of live or plastic plants, driftwood, rocks, and a variety of commercially made plastic sculptures. Though rocks and plants have more practical purposes for the health of the fish and the water quality.

  4. Water quality - Wikipedia

    en.wikipedia.org/wiki/Water_quality

    The National Water Quality Inventory Report to Congress is a general report on water quality, providing overall information about the number of miles of streams and rivers and their aggregate condition. [65] The CWA requires states to adopt standards for each of the possible designated uses that they assign to their waters.

  5. Water testing - Wikipedia

    en.wikipedia.org/wiki/Water_testing

    Water testing is a broad description for various procedures used to analyze water quality. Millions of water quality tests are carried out daily to fulfill regulatory requirements and to maintain safety. [1] Testing may be performed to evaluate: ambient or environmental water quality – the ability of a surface water body to support aquatic ...

  6. Fishkeeping - Wikipedia

    en.wikipedia.org/wiki/Fishkeeping

    An aquascaped freshwater aquarium. Fishkeeping is a popular hobby, practiced by aquarists, concerned with keeping fish in a home aquarium or garden pond.It is a practice that encompasses the art of maintaining one's own aquatic ecosystem, featuring a lot of variety with various water systems, all of which have their own unique features and requirements.

  7. Aquarium filter - Wikipedia

    en.wikipedia.org/wiki/Aquarium_filter

    Prefiltered water is delivered to a perforated plate (drip plate). Prefiltering may take place in the aquarium via a foam block or sleeve in the overflow, or weir siphon, or it may be prefiltered by filter wool resting on the perforated plate. The waste laden water from the aquarium spreads over the drip plate, and rains down through a medium.

  8. Depth sounding - Wikipedia

    en.wikipedia.org/wiki/Depth_sounding

    A sailor and a man on shore, both sounding the depth with a line. Depth sounding, often simply called sounding, is measuring the depth of a body of water.Data taken from soundings are used in bathymetry to make maps of the floor of a body of water, such as the seabed topography.

  9. List of freshwater aquarium fish species - Wikipedia

    en.wikipedia.org/wiki/List_of_freshwater...

    Eats mainly algae. High oxygen level and water quality are greatly appreciated in addition to a strong current (but not needed as many sources claim) [52] Rosy loach: Physoschistura mango: 3 cm (1.2 in) Sumo loach: Schistura balteata: 8 cm (3.1 in) Zodiac loach: Mesonoemacheilus triangularis: 6 cm (2.4 in) Serpenticobitis octozona: 5.5 cm (2.2 in)